Tsarist autocracy refers to the absolute rule of the tsar, or emperor, in Russia, characterized by centralized power and a lack of constitutional limitations on the monarch's authority. This system allowed the tsar to govern without significant checks from other political institutions or a representative body, creating a government that was highly personal and reliant on the will of the monarch. Under this autocratic system, the tsars often exercised their power through a combination of traditional authority, military force, and a complex bureaucracy.